MOLLUSCA. 
529 
Nassa {Alectryon) intermedia (Dunlcer, see ^ Record’ forl866/p. 179) figured 
in Reis. Novar. Moll. pi. 1. fig. 2. 
Nassa approximata (Pease) of tlie Voyage de 1’ Astrolabe and the 
Voyage an Pole Sud, not of Gmelin, Polynesia. Pease, Am. Journ. Conch, iii, 
p. 272, pi. 23. fig. 8. — N. gracilis, sp. n., Pease, ibid. p. 273, fig. 4, Ascension 
Island, Polynesia. — N. microstoma (Pease) again described, ibid. p. 233.—' 
Nassa lecadrei, sp. n., Folin, M^l^agrinicoles, p. 73, pi. 6. fig. 14, on pearl- 
oysters from Panama. — Nassa insculpta, sp. n.. Carpenter, Proc. Calif. Acad. 
Nat. Sc. 1866, p.223, California. — Nassa morleyi,B^. n., Crosse, Journ. Concha 
XV. p. 445, locality unknown. 
Tritonium (Nassa) fraterculus (Dunker) and gemmtdiferum (Adams), 
Hakodate. Schrenck, 1. c. pp. 435-437. 
[Bullia'] Tritonium ( Volutharpa) ampullaceum (Midd.) = Bullia perryi 
(j 2 i.j)—Volutharpa desJiayesiana and perhaps also morchiana (Fischer), 
Sachalin and Hakodate. Schrenck, 1. c. pp. 437-440. 
Eburna japonica (Reeve), from Hakodate, Schrenck, 1. c. p. 441 j from 
Nangasaki, Lischke, Mai. Blatt. xiv. p. 170 j from Yohohama, sold in the 
shops, Martens, Preuss, Exp. i. p. 140. 
Olividad. 
Olixta gracilis (Brod. et Sow.), (Mawe) = (Reeve), 
(Diiclos), and tergina (Duclos), Bay of Castries, Gulf of Tartary. Schrenck, 
/.<?. pp. 453-457. 
Oliva violacea, jamaicensis, polita, piperata, faha (Philippines), hlanda, 
cylindrica (Borneo), ornata (North Australia), similis, pallida, ohlonga (Cen- 
tral A.merica), and truncata (Cape of Good Hope) are new species described 
by Marrat, Ann. & Mag. Nat. Hist. xx. pp. 213-215. 
Olivella ( Callicmax) simplex, sp. n., Pease, Am. Journ. Conch, iii. p. 281, 
pi. 23. fig. 24, Paumotu Islands. 
Fasciolariid^. 
According to Prof. Troschel^s researches Latirus, 
Leucozonia, and Peristernia agree with one another in the 
structure of the radula; he describes and figures those of the 
following species: — F. salmo, tulipa, trapezium, filamentosa, 
distans, and sp. ? ; Latirus, sp. ; Leucozonia angulata, fuscata, 
and triserialis Peristernia nassatula (Gebiss der Schneck. 
pp. 60-66, pi. 5. figs. 12-20, pi. 6. figs. 1-3). All have three 
plates in each series, the lateral ones transversely elongate and 
nmlticuspidate, the middle one square, with three, rarely five 
points. Fusus syracusanus (L.) has exactly the same radula, and 
therefore is transferred by Prof. Troschel to the genus Latirus, 
where it will be the type of a new subgenus, Aptyxis, wanting 
the columellar folds. In Fusus islandicus (Chemn.), the radula 
of which is copied by Trosehel from Loven, the lateral plate is 
shorter, but also multicuspidate, the middle one has only one 
point ; nevertheless it agrees more with the Fasciolariidce than 
with the rest of Fusus or Neptunea, and therefore is placed by 
Troschel in this family as genus Sipho (Klein) . The genus Pe- 
risternia has been removed by Dr. Stimpson from the Fasciola- 
